Method for controlling rice-stem borer

Abstract

The invention discloses a method for controlling rice-stem borers. The method comprises the following steps: 1, placing a trapping basin in every 20m<2> of a rice field, and adding water to each trapping basin to reach a position 1 to 2cm away from the upper edge of the trapping basin, wherein each trapping basin is a circular open trapping basin which has an open area of 0.2 to 0.4m<2> and a depth of 8 to 10cm; 2, spraying about 0.1 to 0.5g of sex pheromone compound of rice-stem borers to the water surface of each trapping basin to which water is added, wherein the sex pheromone compound of the rice-stem borers is prepared from the following components in parts by weight: 40 parts of cis-11-hexadecanal, 8 parts of cis-13-octadecanal, 5 parts of cis-9-hexadecanal, anthocyanin, glycerol and ethyl acetate. According to the method disclosed by the invention, male rice-stem borers are trapped by using the sex pheromone compound of the rice-stem borers, such that the number of a second generation of the rice-stem borers can be remarkably reduced; the sex pheromone compound of the rice-stem borers is directly sprayed during the use, can float on the surface of the water, is suitable for release of sex pheromone of the rice-stem borers, and has a good trapping effect and no pollution to the environment.

Description

technical field [0001] The invention relates to the field of biological pesticides, in particular to a method for controlling rice stem borer. Background technique [0002] Chilo borer is a common rice pest. The drill string of its larvae can cause serious damage to rice and cause rice yield reduction. In recent years, the occurrence range of rice borer in China has continued to expand, the frequency of outbreaks has continued to increase, and damage losses have continued. Aggravated, and there is a tendency to go north. Observing the current status of the rice borer in the Yangtze River Delta region, its population dynamics and its damage have the following new characteristics: the survival rate of overwintering generations is increased, the occurrence period is earlier, there are many moth peaks under the lamp, and the number of moths occurs is large. To predict the moth peak. Because chemical control brings a series of problems: (1) production cost increases; (2) the po...

AI Technical Summary

Problems solved by technology

Because chemical control brings a series of problems: (1) production cost increases; (2) the point source pollution of atmosphere, water source etc. caused by pesticide production process in nearby areas; Strong concealment, traditional chemical control methods are difficult to master, resulting in a lot of waste of pesticides, causing non-point source pollution of agricultural soil environment and river and lake water systems after use, leading to environmental pollution and damage to farmland ecosystems; The pollution-free control of Chilo borer is imminent